Overload Capability - Siemens Sinamics G120P Operating Instructions Manual

11.2.2

Overload capability

The converter is equipped with an overload reserve to deal with breakaway torques, for
example.
In drives with overload requirements, the appropriate base load current must, therefore, be
used as a basis for the required load.
The overloads apply under the precondition that the converter is operated at its base-load
current before and after the overload (a duty cycle duration of 300 s is used as a basis here).
Duty cycles
The base load current for low overload (I
135% for 3 s.
The base load current I
Figure 11-5
Inverter cabinet units
Operating Instructions, 12/2014, A5E32923362A
for a high overload is based on a duty cycle of 150% for 60 s.
H
Overload curves
) is based on a load duty cycle of 110% for 60 s or
L
Technical specifications
11.2 General data
475